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P-BLOCK GROUP ELEMENTS: The p block elements are belong to group 13 to 18.the outermost electronic configuration is ns2 np1 to ns2 np6.these are called representative elements.it possess high electron gain enthalpy or electronegativity. Properties:1)they possess high electronegativity. 2)All p-block elements are metalloids or non metalloids. 3)They also share electrons to form covalent bonds. 4)18th group elements are noble gases.it is more stable due to the presence of octet configuration in outermost configuration. D-BLOCK GROUP ELEMENTS:
D block elements are present between the s-block elements and p-block elements.the general electronic configuration is n-1)d1-10.PROPERTIES:1)they are hard and heavy metals. 2)they mostly formed coloured ions
Favourable conditions for electrovalency are: (1) Low charge on ions, large cation, small anion (2) High charge on ions, small cation, large anion (3)High charge on ions,
(a) Starting from a sample of chromate ore, how is potassium dichromate prepared? Explain all the steps included with chemical equations. (b) Write the balanced chemical equatio
chemical laws and their verification
The energy of an electron in orbit of hydrogen atom is : (1) 13.6/n 4 x eV (2) 13.6/n 3 xeV (3) 13.6/n 2 xeV (4)13.6/nx eV Ans:
Whereas a pure molecular species has a definite stoichiometry, this is not often true for solids. Defects in crystals will include vacancies (atoms missing from their expected site
Explain indoctomeric effect with example of nitro compound?
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Q. Consider a hypothetical system in which two aqueous solutions are separated by a semiper- meable membrane. Solution ? is prepared by dissolving 1.00 x 10 -5 mol KCl in 10.0 g
Crystals and glasses Unlike a complex ion or molecule, which is a finite (often small) assembly of atoms, a solid has no fixed shape and size but can add atoms indefinit
Chemical Properties of Ethers Ethers are fairly stable compounds. These are not simply reacted along with alkalies, dilute mineral acids, active metals, oxidising agents within
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